Foldable height-adjustable desk workstation

ABSTRACT

The present invention relates to an office appliance, and particularly discloses a foldable height-adjustable desk workstation, which comprises a workstation desktop, upper workstation support legs, lower workstation support legs, lifters, and locking mechanisms. In the foldable height-adjustable desk workstation with the above-mentioned structure, the workstation desktop can be controlled by the lifters arranged between the upper workstation support legs and the lower workstation support legs to vertically go up or down, and the workstation desktop can be locked at any height position between an upper limit position and a lower limit position by the locking mechanisms. A synchronous link mechanism is arranged between locking bars of the two sets of locking mechanisms, the two sets of locking mechanisms can be synchronously unlocked by a spanner connected to any one of the locking bars, single-hand operation can ensure the balanced raising and lowering of the workstation desktop, so that the other hand can synchronously conduct other actions such as applying raising or lowering pressure on the workstation desktop, and thereby the convenience and experience of operating the workstation desktop are improved.

TECHNICAL FIELD

The present invention relates to an office appliance, and in particular to a foldable height-adjustable desk workstation.

BACKGROUND ART

CN106805472A discloses a foldable height-adjustable desk workstation. In the foldable height-adjustable desk workstation, two spanners are respectively arranged on the left side and right side of a workstation desktop, configured to drive fastening bars to release the locking of main sliding ends. When the workstation desktop needs to go up or down, left and right hands are required to respectively control the corresponding spanners and simultaneously turn the spanners to release the main sliding ends locked by the fastening bars, so that the raising or lowering operation of the workstation desktop can be carried out. The defect of the structure is that only when the left and right hands simultaneously turn the spanners can raising or lowering be carried out, and because raising or lowering pressure also has to be applied besides locking release in the process of raising or lowering the workstation desktop, for a user with short stature, short arm span and little strength, it is difficult to apply pressure as both hands are used for turning the spanners. In addition, the probability that unlocking is not synchronous on both sides also exists in the foldable height-adjustable desk workstation with the structure, and if unlocking is not synchronous while raising or lowering pressure is applied, the phenomenon that the workstation desktop is stuck will occur.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to solve the technical defect of the foldable height-adjustable desk workstation in the prior art CN106805472A requiring the spanners of both sides to simultaneously unlock the main sliding ends.

In order to solve the above-mentioned technical problem, the technical solution provided by the present invention is as follows: a foldable height-adjustable desk workstation comprises:

a workstation desktop; upper workstation support legs, the pair of upper workstation support legs are arranged in parallel on both sides of the lower surface of the workstation desktop; lower workstation support legs, the pair of lower workstation support legs are respectively arranged under the pair of upper workstation support legs; and lifters, the pair of lifters are respectively arranged between the upper workstation support leg and lower workstation support leg of the same side, each lifter at least comprises a first slider, and the interior of each upper workstation support leg is provided with a first slide cavity matching the first slider along the length direction; the foldable height-adjustable desk workstation further comprises locking mechanisms, each locking mechanism comprises a locking bar arranged in the first slide cavity, both ends of the locking bars are respectively articulated with both ends of the upper workstation support legs, and lockup mechanisms are arranged between the locking bars and the first sliders; a synchronous link mechanism is arranged between the locking bars in the first slide cavities of the pair of upper workstation support legs, and a spanner is connected to the locking bar at one side.

In the foldable height-adjustable desk workstation with the above-mentioned structure, the workstation desktop can be controlled by the lifters arranged between the upper workstation support legs and the lower workstation support legs to vertically go up or down, and the workstation desktop can be locked at any height position between an upper limit position and a lower limit position by the locking mechanisms. A synchronous link mechanism is arranged between locking bars of the two sets of locking mechanisms, the two sets of locking mechanisms can be synchronously unlocked by a spanner connected to any one of the locking bars, single-hand operation can ensure the balanced raising and lowering of the workstation desktop, so that the other hand can synchronously conduct other actions such as applying raising or lowering pressure on the workstation desktop, and thereby the convenience and experience of operating the workstation desktop are improved.

In a preferred embodiment, each lifter further comprises a main support rod and an auxiliary support rod, and the main support rod and the auxiliary support rod are arranged crosswise and articulated with each other at the junction; the upper ends of the main support rods are articulated with the first sliders, and the lower ends of the main support rods are articulated with the lower workstation support legs; the interior of each lower workstation support leg is provided with a second slide cavity, a second slider is arranged in the second slide cavity, and the sliding direction of the second sliders in the second slide cavities are parallel to the sliding direction of the first sliders in the first slide cavities, the upper ends of the auxiliary support rods are articulated with the upper workstation support legs, and the lower ends of the auxiliary support rods are articulated with the second sliders. By means of the crossed arrangement of the main support rod and the auxiliary support rod and the mode that one end is articulated and the other end is slidably connected, the lifter with the structure realizes the vertical raising and lowering of the workstation desktop.

In a preferred embodiment, first springs are arranged in the first slide cavities, and each first spring is located between the first slider and one end of the first slide cavity; second springs are arranged in the second slide cavities, and each second spring is located between the second slider and one end of the second slide cavity.

In a preferred embodiment, the first springs and/or the second springs are variable-pitch springs.

In a preferred embodiment, the elastic coefficient of the ends, close to the first sliders and/or the second sliders, of the variable-pitch springs is less than the elastic coefficient of the ends far from the first sliders and/or the second sliders.

In a preferred embodiment, the synchronous link mechanism comprises a pair of first links respectively connected to the locking bars and a pair of second links for being connected to the pair of links, one end of each first link is fixedly connected to the locking bar, and both ends of the second links are respectively articulated with the ends, far from the locking bars, of the pair of first links. The synchronous link mechanism with the structure has the characteristics of simple structure and good synchronicity.

In a preferred embodiment, each lockup mechanism comprises a plurality of fastening notches or fastening teeth arranged on the locking bar along the length direction of the locking bar and a lockup portion arranged on the first slider and matching the fastening notches or fastening teeth, and an avoiding area is arranged at a position close to the lockup portion. After the spanner controls the fastening teeth or fastening notches on the locking bars to rotate to the avoiding areas, the locking bars release the locking of the first sliders.

In a preferred embodiment, each lockup mechanism comprises a plurality of fastening notches or fastening teeth arranged on the locking bar along the length direction of the locking bar and a lockup portion arranged on the first slider and matching the fastening notches or fastening teeth, and an avoiding area is arranged at a position close to the lockup portion.

In a preferred embodiment, elastic mechanisms are arranged on the locking bars or between the locking bars and the upper workstation support legs. The elastic mechanisms are configured to make the fastening notches or fastening teeth on the locking bars be in matched connection with the lockup portions on the first sliders by means of elastic force under the natural state of the released spanner, so that the workstation desktop is kept at a corresponding height position.

In a preferred embodiment, the elastic mechanisms are torsional springs arranged on the locking bars, and both ends of the torsional springs are fixed. The torsional spring has the technical advantages of simple structure, low cost and good stability of rotary torque provided for the locking bar.

In a preferred embodiment, a keyboard tray is arranged under the workstation desktop, and brackets are arranged between the keyboard tray and the workstation desktop.

In a preferred embodiment, the keyboard tray is slidably connected to the brackets, and the sliding direction is parallel to the sliding direction of the first sliders. The drawing type keyboard tray is more convenient to use, meeting the individualized requirement of users.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a three-dimensional structural schematic diagram of a foldable height-adjustable desk workstation of the present embodiment;

FIG. 2 is a three-dimensional structural schematic diagram of the foldable height-adjustable desk workstation shown in FIG. 1 after a workstation desktop is hidden;

FIG. 3 is a partially enlarged schematic diagram of the portion A shown in FIG. 2;

FIG. 4 is a three-dimensional structural schematic diagram of the state of connection between a locking bar and a first slider in the foldable height-adjustable desk workstation of the present embodiment;

FIG. 5 is a partial structural schematic diagram of the locking state of the locking bar and the first slider in the present embodiment;

FIG. 6 is a partial structural schematic diagram of the unlocking state of the locking bar and the first slider in the present embodiment;

FIG. 7 is a partial structural schematic diagram of the first slider in the present embodiment;

FIG. 8 is a side view of the foldable height-adjustable desk workstation of the present embodiment, wherein a first slide cavity is in a cutaway state;

FIG. 9 is an internal structural schematic diagram of a lower workstation support leg in the present embodiment;

FIG. 10 is a structural schematic diagram of a first spring in the present embodiment, wherein the first spring is a variable-pitch spring;

FIG. 11 is a side view of the foldable height-adjustable desk workstation of the present embodiment in which a keyboard tray is in a state of being drawn out; and

FIG. 12 is a side view of the foldable height-adjustable desk workstation of the present embodiment in which the keyboard tray is in a state of being retracted.

DETAILED DESCRIPTION OF THE INVENTION

In order to make the objective, technical solution and advantages of the present invention clearer, the present invention is further described in details below in reference to drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention rather than to limit the present invention.

As shown in FIG. 1 and FIG. 2, a foldable height-adjustable desk workstation of the present embodiment comprises a workstation desktop 10, a keyboard tray 20, a pair of upper workstation support legs 30, a pair of lower workstation support legs 40, and lifters 50 arranged between the upper workstation support leg 30 and lower workstation support leg 40 of the same side.

In the above-mentioned foldable height-adjustable desk workstation, the keyboard tray 20 is connected under the workstation desktop 10 through brackets 21. In a preferred implementation mode, as shown in FIG. 11 and FIG. 12, the keyboard tray 20 is slidably connected to the brackets 21, so that drawing operation can be performed on the keyboard tray 20, and the drawing type keyboard tray is more convenient to use, meeting the individualized requirement of users. It should be pointed out that the sliding mechanism in a drawer or a keyboard tray in the prior art can be adopted as a sliding mechanism between the keyboard tray 20 and the brackets 21, and the specific structure is not specially limited herein.

In the foldable height-adjustable desk workstation of the present embodiment, the pair of upper workstation support legs 30 are arranged in parallel to each other on both sides of the lower surface of the workstation desktop 10, and the pair of lower workstation support legs 40 are respectively arranged under the pair of upper workstation support legs 30. In a preferred implementation mode, each lifter 50 arranged between the upper workstation support leg 30 and the lower workstation support leg 40 comprises a main support rod 51 and an auxiliary support rod 52, and as shown in FIG. 1, the main support rod and the auxiliary support rod are arranged crosswise and articulated with each other at the junction.

In the present embodiment, the upper ends of the main support rods 51 are articulated with first sliders 53, and the lower ends are articulated with the lower workstation support legs 40. The interiors of the upper workstation support legs 30 are provided with first slide cavities 31 which extend along the length direction and match the first sliders 53. The upper ends of the auxiliary support rods 52 are articulated with the upper workstation support legs 30, the lower ends are slidably connected to the lower workstation support legs 40, and the sliding direction is parallel to the sliding direction of the first sliders. In a preferred implementation mode of the present embodiment, as shown in FIG. 9, the interiors of the lower workstation support legs 40 are provided with second slide cavities 41, and second sliders 42 are arranged in the second slide cavities 41, wherein the sliding direction of the sliders 42 in the second slide cavities 41 is parallel to the sliding direction of the first sliders 53 in the first slide cavities 31.

Further, the present embodiment further comprises locking mechanisms, each locking mechanism comprises a locking bar 61 arranged in the first slide cavity 31, as shown in FIG. 2, and both ends of the locking bar 61 are respectively articulated with both ends of the upper workstation support leg 30. Elastic mechanisms are arranged on the locking bars 61 or between the locking bars 61 and the upper workstation support legs 30, and the elastic mechanisms can provide torsional elastic force for driving the locking bars to rotate. Preferably, as shown in FIG. 4, the elastic mechanisms in the present embodiment are torsional springs 65 arranged on the locking bars, and both ends of the torsional springs 65 are fixed. The torsional spring has the technical advantages of simple structure, low cost and good stability of rotary torque provided for the locking bar.

Further, lockup mechanisms are arranged between the locking bars 61 and the first sliders 53, and each lockup mechanism comprises a plurality of fastening notches or fastening teeth arranged on the locking bar along the length direction of the locking bar 61 and a lockup portion arranged on the first slider 53 and matching the fastening notches or fastening teeth. Preferably, as shown in FIGS. 4-7, in the present embodiment, the lockup mechanisms are a plurality of fastening notches 66 arranged on the locking bars 61, the first sliders 53 are provided with the lockup portions 541 in matched connection with the fastening notches 66, and avoiding areas 542 are arranged at positions close to the lockup portions 541. As shown in FIG. 5, under a normal state, under the action of elastic force, the fastening notches 66 and the lockup portions 541 are in a connected state, and the workstation desktop 10 is fixed at any height position. When the workstation desktop 10 needs to be adjusted, as shown in FIG. 6, a spanner 62 connected to the locking bar 61 can be utilized to rotate the locking bars until the fastening notches 66 are separated from the lockup portions 541 and the locking bars 61 are located in the avoiding areas 542, at this moment, unlocking is done, and the workstation desktop 10 can freely go up or down.

In a preferred implementation mode, as shown in FIG. 2 and FIG. 3, a synchronous link mechanism is arranged between the locking bars of the two sets of locking mechanisms, the synchronous link mechanism comprises a pair of first links 64 respectively connected to the locking bars 61 and second links 63 for being connected to the pair of first links 64, wherein one end of each first link 64 is fixedly connected to the locking bar 61, and both ends of the second links 63 are respectively articulated with the ends, far from the locking bars 61, of the pair of first links 64. Based on the above-mentioned synchronous link mechanism, the locking bars of the two sets of locking mechanisms can carry out synchronous rotational motion, and by rotating any one of the locking bars, the other locking bar can be driven to synchronously rotate. Therefore, in the present embodiment, as long as a spanner is connected to the locking bar of any one of the sides, the synchronous unlocking of the locking mechanisms on both sides can be carried out by singe-operation, single-hand operation can ensure the balanced raising and lowering of the workstation desktop, so that the other hand can synchronously conduct other actions such as applying raising or lowering pressure on the workstation desktop, and thereby the convenience and experience of operating the workstation desktop are improved.

Further, as shown in FIG. 8 and FIG. 9, in the present embodiment, first springs 70 are arranged in the first slide cavities 31, and each first spring 70 is located between the first slider 53 and one end of the first slide cavity 31. Second springs 80 are arranged in the second slide cavities 41, and each second spring 80 is located between the second slider 42 and one end of the second slide cavity 41. It should be pointed out that the first springs and the second springs can be arranged as not only compressed springs but also extended springs. When the workstation desktop is at the lowest position, the first springs and the second springs are in an energy-storing state. After the locking of the locking mechanisms is released by acting on the spanner 62, elastic potential energy stored by the first spring and the second spring is released, the released elastic potential energy drives the first sliders and the second sliders to slide, so that the workstation desktop is driven to rise, and therefore, in the raising process of the workstation desktop, a user does not need to apply external force or only needs to apply little external force.

In a preferred embodiment, as shown in FIG. 10, variable-pitch springs are at least adopted as the first springs 70, each variable-pitch spring consists of a first spring section 71 and a second spring section 72, wherein the elastic coefficient of the first spring section 71 far from the first slider is greater than the elastic coefficient of the second spring section 72 close to the first slider. The purpose of such an arrangement is that in the lowering process of the workstation desktop, during initial lowering, because the workstation desktop is high, the user cannot conveniently apply force, the workstation desktop can be driven by little pressure to go down, and at the initial lowering stage, the second spring sections 72 with the less elastic coefficient are compressed. After the workstation desktop goes down for a certain height, as the height is reduced, the user can more conveniently apply pressure, and at this moment, the first spring sections 71 with the greater elastic coefficient start to be compressed. When the workstation desktop is raised at the beginning, resistance is great, the elastic potential energy released by the variable-pitch springs can overcome the great resistance at the initial stage of raising, realizing raising without manual assistance; at the middle and late stages of raising, the elastic force provided by the variable-pitch springs decreases, and in the meantime, because of the decrease of raising resistance, the workstation desktop can still keep relatively stable raising speed without causing rapid raising. By arranging the variable-pitch springs, the experience of the user is made better, and ergonomics is better met.

It should be pointed out that in the present embodiment, not only variable-pitch springs but also equal-pitch springs can be used as the second springs 80.

In a word, what is described above is merely the preferred embodiment of the present invention, and is not used to limit the present invention, and any modifications, equivalent replacement, improvements and the like which are made within the spirit and principle of the present invention shall fall within the protection scope of the present invention. 

1-11. (canceled)
 12. A foldable height-adjustable desk workstation, comprising: a workstation desktop; upper workstation support legs, the pair of upper workstation support legs are arranged in parallel on both sides of the lower surface of the workstation desktop; lower workstation support legs, the pair of lower workstation support legs are respectively arranged under the pair of upper workstation support legs; and lifters, the pair of lifters are respectively arranged between the upper workstation support leg and lower workstation support leg of the same side, each lifter at least comprises a first slider, and the interior of each upper workstation support leg is provided with a first slide cavity matching the first slider along the length direction; characterized by further comprising locking mechanisms, each locking mechanism comprises a locking bar arranged in the first slide cavity, both ends of the locking bars are respectively articulated with both ends of the upper workstation support legs, and lockup mechanisms are arranged between the locking bars and the first sliders; a synchronous link mechanism is arranged between the locking bars in the first slide cavities of the pair of upper workstation support legs, and a spanner is connected to the locking bar at one side.
 13. The foldable height-adjustable desk workstation of claim 12, wherein each lifter further comprises a main support rod and an auxiliary support rod, and the main support rod and the auxiliary support rod are arranged crosswise and articulated with each other at the junction; the upper ends of the main support rods are articulated with the first sliders, and the lower ends of the main support rods are articulated with the lower workstation support legs; the interior of each lower workstation support leg is provided with a second slide cavity, a second slider is arranged in the second slide cavity, and the sliding direction of the second sliders in the second slide cavities are parallel to the sliding direction of the first sliders in the first slide cavities; the upper ends of the auxiliary support rods are articulated with the upper workstation support legs, and the lower ends of the auxiliary support rods are articulated with the second sliders.
 14. The foldable height-adjustable desk workstation of claim 13, wherein first springs are arranged in the first slide cavities, and each first spring is located between the first slider and one end of the first slide cavity; second springs are arranged in the second slide cavities, and each second spring is located between the second slider and one end of the second slide cavity.
 15. The foldable height-adjustable desk workstation of claim 14, wherein the first springs and/or the second springs are variable-pitch springs.
 16. The foldable height-adjustable desk workstation of claim 15, wherein the elastic coefficient of the ends, close to the first sliders and/or the second sliders, of the variable-pitch springs is less than the elastic coefficient of the ends far from the first sliders and/or the second sliders.
 17. The foldable height-adjustable desk workstation of claim 12, wherein each lockup mechanism comprises a plurality of fastening notches or fastening teeth arranged on the locking bar along the length direction of the locking bar and a lockup portion arranged on the first slider and matching the fastening notches or fastening teeth, and an avoiding area is arranged at a position close to the lockup portion.
 18. The foldable height-adjustable desk workstation of claim 15, wherein each lockup mechanism comprises a plurality of fastening notches or fastening teeth arranged on the locking bar along the length direction of the locking bar and a lockup portion arranged on the first slider and matching the fastening notches or fastening teeth, and an avoiding area is arranged at a position close to the lockup portion.
 19. The foldable height-adjustable desk workstation of claim 12, wherein the synchronous link mechanism comprises a pair of first links respectively connected to the locking bars and a pair of second links for being connected to the pair of links, one end of each first link is fixedly connected to the locking bar, and both ends of the second links are respectively articulated with the ends, far from the locking bars, of the pair of first links.
 20. The foldable height-adjustable desk workstation of claim 17, wherein the synchronous link mechanism comprises a pair of first links respectively connected to the locking bars and a pair of second links for being connected to the pair of links, one end of each first link is fixedly connected to the locking bar, and both ends of the second links are respectively articulated with the ends, far from the locking bars, of the pair of first links.
 21. The foldable height-adjustable desk workstation of claim 18, wherein the synchronous link mechanism comprises a pair of first links respectively connected to the locking bars and a pair of second links for being connected to the pair of links, one end of each first link is fixedly connected to the locking bar, and both ends of the second links are respectively articulated with the ends, far from the locking bars, of the pair of first links.
 22. The foldable height-adjustable desk workstation of claim 12, wherein elastic mechanisms are arranged on the locking bars or between the locking bars and the upper workstation support legs.
 23. The foldable height-adjustable desk workstation of claim 17, wherein elastic mechanisms are arranged on the locking bars or between the locking bars and the upper workstation support legs.
 24. The foldable height-adjustable desk workstation of claim 10, wherein elastic mechanisms are arranged on the locking bars or between the locking bars and the upper workstation support legs.
 25. The foldable height-adjustable desk workstation of claim 23, wherein the elastic mechanisms are torsional springs arranged on the locking bars, and both ends of the torsional springs are fixed.
 26. The foldable height-adjustable desk workstation of claim 24, wherein the elastic mechanisms are torsional springs arranged on the locking bars, and both ends of the torsional springs are fixed.
 27. The foldable height-adjustable desk workstation of claim 12, wherein a keyboard tray is arranged under the workstation desktop, and brackets are arranged between the keyboard tray and the workstation desktop.
 28. The foldable height-adjustable desk workstation of claim 25, wherein a keyboard tray is arranged under the workstation desktop, and brackets are arranged between the keyboard tray and the workstation desktop.
 29. The foldable height-adjustable desk workstation of claim 26, wherein a keyboard tray is arranged under the workstation desktop, and brackets are arranged between the keyboard tray and the workstation desktop.
 30. The foldable height-adjustable desk workstation of claim 21, wherein the keyboard tray is slidably connected to the brackets, and the sliding direction is parallel to the sliding direction of the first sliders.
 31. The foldable height-adjustable desk workstation of claim 29, wherein the keyboard tray is slidably connected to the brackets, and the sliding direction is parallel to the sliding direction of the first sliders. 